Part 2. There are three ropes
suspending a metal ring in the air. The ring is positioned horizontally
over a flat surface, but is not in contact with the surface. Shown
below is a view of the ring from above. Two forces, Fa
and Fb are specified below. One additional force, Fc,
has not been shown.
Fa has a magnitude of 7 N, 23o
above the positive x-axis.
Fb has a magnitude of 11 N, 40o below
the positive x-axis.
Determine the magnitude and direction of Fc
such that the ring stays stationary. Ignore the force of gravity.
Sketch all three forces, and describe them in your own words.